HP T740 Thin Client Review TinyMiniMicro with PCIe Slot


HP T740 Performance

Instead of going through the entire Linux-Bench test suite, we are going to show a few performance and power numbers here to give a general sense of performance. We actually planned to do storage testing, but then we realized that there was a huge variability in terms of what drives could be found in machines.

Python Linux 4.4.2 Kernel Compile Benchmark

This is one of the most requested benchmarks for STH over the past few years. The task was simple, we have a standard configuration file, the Linux 4.4.2 kernel from kernel.org, and make the standard auto-generated configuration utilizing every thread in the system. We are expressing results in terms of compiles per hour to make the results easier to read:

AMD Ryzen Embedded V1756B Linux Kernel Compile Benchmark
AMD Ryzen Embedded V1756B Linux Kernel Compile Benchmark

In terms of performance, the AMD Ryzen Embedded V1756B was better than expected. This is a quad-core, eight-thread, Zen-based Ryzen CPU with Vega 8 graphics. We were a bit surprised with how closely the numbers tracked the Ryzen 5 2400GE in the limited tests we publish for TinyMiniMicro style reviews.

7-zip Compression Performance

7-zip is a widely used compression/ decompression program that works cross-platform. We started using the program during our early days with Windows testing. It is now part of Linux-Bench.

AMD Ryzen Embedded V1756B 7zip Compression Benchmark
AMD Ryzen Embedded V1756B 7zip Compression Benchmark

With the additional threads, we get performance generally between the Intel Core i5-8500T and the Core i5-7500T, but generally much closer to the 8th generation Intel part.

OpenSSL Performance

OpenSSL is widely used to secure communications between servers. This is an important protocol in many server stacks. We first look at our sign tests:

AMD Ryzen Embedded V1756B OpenSSL Sign Benchmark
AMD Ryzen Embedded V1756B OpenSSL Sign Benchmark

Here are the verify results:

AMD Ryzen Embedded V1756B OpenSSL Verify Benchmark
AMD Ryzen Embedded V1756B OpenSSL Verify Benchmark

Overall, results were very solid for the Ryzen Embedded CPU. Many thin clients used anemic CPUs. After all, for ThinPro running RDP sessions, one does not need a lot of local performance. The T740 is somewhat of an outlier insofar as it actually has very solid performance for a thin client.

Next, we are going to take a look at power consumption before getting to our key lessons learned and final words.

HP T740 Power Consumption

Power consumption was a mixed bag. First off, the unit comes with a 90W power supply. When fully configured and running maximum workloads, it needs it.

HP T740 Thin Client 90W PSU
HP T740 Thin Client 90W PSU

Generally, we saw idle in the 19-20W range but we certainly could get the system to 65-90W depending on the NIC being used and how much of the CPU/ GPU we were using. At 90W it is quite loud since there is a single fan. It seems like this system uses more power than a modern Project TinyMiniMicro node at idle. The key here is that the additional power consumption is a result of a higher-performance CPU and the low profile adapter. Our general guidance would be to stick to <=10W cards since we saw thermal issues with a 100GbE NIC that we tried (just for fun since this system cannot handle dual 100GbE ports.)

Next, we will get to the key lessons learned and our final words.


  1. Thanks for this. Been looking for a thin client with PCIE capability (and up-to-date hardware) for robotics applications for a while. This fits the bill perfectly.

  2. My biggest gripe with the most of the NUCs or 1L units has been the lack of PCIe slots. This is a pretty nice little package, even at 2.2L. Nice review, absolutely love this series and its tangents.

  3. I wonder what the exact target market for these things was. I assume that HP had one in mind; but anywhere I’ve worked “people we stick on thin clients” and “people who need 4 monitors” were largely disjoint groups.

  4. HP’s t740 QuickSpecs PDF says it supports DASH OoB management. Anyone try this? (Maybe I missed it in review…)

    Any idea whether ECC RAM is supported? I think the V1756B is capable… but can’t tell whether the t740 is.

  5. > I wonder what the exact target market for these things was. I assume that HP had one in mind; but anywhere I’ve worked “people we stick on thin clients” and “people who need 4 monitors” were largely disjoint groups.

    In my head the target market are engineering, cad, design and such which use this as a “thin” client to access much more high performance set ups. Or maybe this thing as a daytrader or similiar information brokerage needer?

  6. Does anything other than Lenovo Tinys (an THIS) have PCI-e expansions? Specifically for additional ethernet NIC

  7. I have got this.

    32GB ram, 128GB + 1TB ssd, intel i350 4 port card, esxi test host, pfsense, unifi controller, windows 10 test machine.

    Excellent choice, i bought it before the prices has been increased.

    I tried with 4X10gbe card, the lan card required active cooling.

  8. I bought a T640 (fanless, unlike T740) to use as a silent desktop to use when all I’m doing is browsing or watching videos. But then I found that it has some bad coil whine, depending on what power brick I use.

    Speaking of DASH management, I tried it on my T640, and apparently it’s an implementation that lacks IP-KVM. According to some PDF, the Elite desktops have KVM, but the T640 does not.

    Even weirder, the serial over LAN didn’t seem to work, and attempting to put the Linux console on one of the Realtek DASH serial ports resulted in some bizarre hangs where the OS went comatose. It’s as if any attempt to write to the FIFO never returned!

    I don’t have one to check, but it wouldn’t surprise me if DASH on the T740 is broken just like on the T640.

  9. I tried this with a HP T730 and it worked well. The T740 is still a currently sold HP product and the prices are still high. The T730 is older and can still be found for under $150 on ebay.

  10. Loved the HP T740 after seeing the STH review on YouTube so I got one but mine came with an Admin password in the BIOS that has so far proven impossible to remove, I’ve reset the password jumper, pressed the Clear CMOS button on the motherboard, even removed the CMOS battery but the password is still there. Does the BIOS come locked like that from HP? Its preventing me from turning on hardware virtualization, changing the boot options or even allocating more RAM to the graphics.

  11. @Alex
    I am also curious about that. I’m looking to purchase one on ebay but they say it has a BIOS password that they weren’t able to clear. Is there a way to clear ALL passwords on this?? Even the Startup Password??

  12. Do you guys at STH think you may have any sway to get HP to fix an issue with the BIOS of this T740 Thin Client? I bought it based on your review here and am mostly happy with it. However, the setting in the BIOS for “Fan Idle Mode” does not work. I documented it here:


    I contacted HP and they want me to send the unit in for repair. I’m sure this is not a repair issue and a BIOS issue especially since the fan works perfectly and does spin up faster when the CPU heats up. Sending the unit to HP would be pointless. Thanks for any help!

  13. Thanks Patrick. When I called HP, they told me that if I had ten or more units than they would look into it, but not for one :-(


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